99% of all search traffic from Google (how is this possible?)

This seems very strange to me: nearly 99% of ALL my organic search traffic is coming from Google, with barely 1% coming from all other search engines combined. It's been this way for over a year, and I'm now trying to figure out what's going on.

Now I know Google is the runaway market share leader, but numbers so one-sided seem really fishy to me. And yes, Analytics is a Google product, but I can't imagine they'd lie outright about where search traffic is coming from.

Any ideas? Are these types of #'s typical? I just can't imagine how it's possible that it's THAT lopsided.

Not necessarily a bad thing to happen. If you're working on Google, Bing should eventually follow. Is this a new website? If so, perhaps Bing will eventually catch up. Otherwise, continue to find out what your users like about the website and focus on leveraging that interest (new content perhaps).

This could likely be the case if you are not the most authoritative site in your niche and are probably ranking in the 10-20 rank on the SERPs. I would guess that less than 20% of the people actually go to the second page of the search results. Google, with its volume of users, should get at least a few dozen visitors to your site even though you are on the second page while very few people use alternatives like Bing in the first place.